selectivity的例句大全

It shows that the frequency selectivity of the forward masking procedure is better than that of the simultaneous masking procedure.

略论螯合滴定法中的掩蔽方法说明前掩蔽法cAP-TC的频率选择性比同时掩蔽法好，前者更能体现耳蜗频率选择性的实际情况。

The selectivity of the method may be increased by addition of thiocarbamide as masking reagent and pre-separation of the interferential elements using NH_3-NH_4Cl. This method is simple, rapid and accurate.

加入硫脲作掩蔽剂和用NH3-NH4CI预分离干扰元素可提高方法的选择性。

The catalyst of selectivity catalytic oxidation con-sists of modified Al _ 2 O _ 3 and active metal oxides.

选择性催化氧化的催化剂都是以改性的Al_2O_3填加适量的活性金属氧化物.

The catalyst has high catalytic activity and selectivity for the prodn . of acrylamide from acrylonitrile.

本发明催化剂在丙烯腈催化合制丙烯酰胺的过程表现出很高的活性及选择性.

Adopting superfine particle as catalytic agent will exert special influence and selectivity of the catalytic agent.

对超细粒子催化剂的应用现状作了详尽的阐述,分析了超细粒子催化剂的制备特点,指出了其发展方向.

The selectivity of dimethyl maleate was up to 90% based on a complete conversion of maleic anhydride.

顺丁烯二酸酐完全转化时，二甲酯产物选择性达到90%。

Taking methanol and maleic anhydride as feed, several catalysts were tested under a given condition to determine the best one according to the selectivity of dimethyl maleate.

在强酸性阳离子交换树脂催化剂的作用下，以甲醇与顺丁烯二酸酐为原料进行催化蒸馏合成顺丁烯二酸二甲酯的研究。

Under mild conditions, at room temperature and ambient atmosphere, diphenyl thiourea could be synthesized through the reaction of aniline and CS 2 over AlCl 3 catalyst with high yield and high selectivity.

常温常压下，用AlCl3作催化剂催化苯胺和CS2进行反应，可以高收率和高选择性地得到二苯硫脲。

A new method to synthesize N, N'-diphenyl thiourea ( DPTU) from aniline and CS 2 was developed in the presence of acidic resin as catalyst under reflux temperature for 6 h with the yield of 82.7% and the selectivity of 100%.

探讨了合成二苯硫脲的新方法。以酸性树脂作催化剂在回流温度下使苯胺与CS2反应6h，二苯硫脲的收率达827%，选择性为100%。

Selectivity Estimation is the base of spatial database query optimizer.

选择性估计是设计空间数据库查询优化器的基础.

These results showed that the AEB type catalyst has superior activity, selectivity and stability.

结果表明,AEB型催化剂具有良好的活性 、 选择性和活性稳定性.

Two-dimensional capillary electrophoresis, which combines two capillary columns with different separation mechanisms, can obviously enhance the peak capacity and conveniently adjust the selectivity.

二维毛细管电泳系统将两种分离机理不同的毛细管柱偶联，可以极大地提高系统的峰容量，便捷地调节分离选择性。

Tyrosinase ( Tyr) catalyzes ortho-hydroxylation of monophenols to catechols ( phenolase activity) and oxidation of catechols into o-quinones ( catecholase activity) with high efficiency and selectivity under mild conditions.

酪氨酸酶在温和条件下能高效、高选择性实现单酚的邻位羟化（单酚酶活性）以及氧化邻二酚为邻二醌（儿茶酚酶活性）。

Ammonium ceric nitrate is a reagent with good selectivity and multiple uses.

硝酸铈铵是一种选择性良好，具有多方面用途的试剂。

Weak gel profile controlling and oil-displacing agent has comparative good selectivity on permeability, it prefer to move into high osmotic large channels and those move into low osmotic channels are very little.

弱凝胶调驱剂具有较好的渗透率选择性，即优先进入高渗透的大孔道，进入低渗透部位者很少。

Group U2 was of low selectivity and high solvency.

另一个是选择性较差、溶解性较好的高溶解性溶剂库，U2。

In this paper, the measure of saccharin in preserved fruits by ion selectivity electrode was researched.

本实验用离子选择电极法测定凉果中糖精钠的应用进行了探讨.

Conclusion: The leukocyte filter can remove leukocyte and thrombocyte with high efficiency and selectivity. It also can significantly reduce the incidence of clinical non-hemolytic transfusion reactions.

结论：白细胞过滤器能高效地、有选择性地滤除白细胞和血小板，能显著降低临床非溶血性输血反应的发生率。

Based on the Wiener index ( W), a harmonic topological index ( H) is proposed. H has been shown good structure selectivity, and appears uniqueness for 149 alkanes from ethane to decane.

基于Wiener指数（W）建立调和拓扑指数（H），该指数对乙烷至癸烷的149种烷烃呈现惟一性表征。

A diffraction selectivity theoretical analysis method of volume gratings with wave front phase encoding is proposed.

给出了理论上分析多重体光栅对随机波前相位选择性衍射的一种方法.